   IEquiv
   (-equiv [coll other] (equiv-sequential coll other))
 
+  IHash
+  (-hash [coll] (hash-coll coll))
+
   ISeqable
   (-seq [coll] nil)
 

  ISequential
  IEquiv
  (-equiv [coll other] (equiv-sequential coll other))

  ISeqable
  (-seq [coll] coll)

  IEquiv
  (-equiv [coll other] (equiv-sequential coll other))

  IHash
  (-hash [coll] (hash-coll coll))

  ISeqable
  (-seq [coll] (seq (lazy-seq-value coll)))

